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1-naphthaleneacetic acid (NAA) Herbicide Profile 3/85

                              1-naphthaleneacetic acid
      CHEMICAL NAME:      1-naphthaleneacetic acid (58)
      TRADE NAME(S):      NAA 800, Fruitone N, Rootone, Tre-Hold, Stik (56)
      FORMULATION(S):     3.5% acid equivalent in a powder base; 5% aqueous
                          liquid; 1% wt. aerosol can (ethyl ester), 6.34%
                          acid equivalent in Stik (56).
      TYPE:               Plant growth regulator
      BASIC PRODUCER(S):  Union Carbide Agricultural Products Co., Inc.
                          P.O. Box 12014
                          T.W. Alexander Dr.
                          Research Triangle Park, NC 27709
      STATUS:             General use
      PRINCIPAL USES:  Inducing root formation on cuttings and
      transplants, inducing pineapple flowering, thinning olives, and
      otherwise controlling fruit set.  Inhibits preharvest apple and pear
      drop.  Applied as a dust or spray it delays dissolution of the
      abscission layer, retarding the fruit drop.  Controls regrowth of tree
      sprouts after trimming (56).
           Ethyl 2-(1-napthyl) acetate is used as a bark paint to reduce
      water-shoot production in pruned apple and pear trees and regrowth of
      unwanted shoots of some ornamental trees (62).
      APPLICATION METHOD(S):  Dip basal end of cuttings before placing in
      rooting medium.  Otherwise foliar spray is the usual application
      method.  For blossom thinning spray apples 14 to 21 days after calyx
      period; pears, 5 to 7 days after petal fall.  To reduce preharvest
      fruit drop, spray at the first sign of sound mature fruit drop (58).
                                    I.  EFFICACY
           To be developed.
                              II.  PHYSICAL PROPERTIES
      MOLECULAR FORMULA:  C12 H10 O2 (58)
      MOLECULAR WEIGHT:   186 (58)
      PHYSICAL STATE:     White crystalline or amorphous powder (pure
                          compound) (58); colorless liquid (ethyl ester)
                          (62).
      ODOR:               Odorless (56)
      MELTING POINT:      134 to 135 C (pure compound) (58); 125-128 C
                          (technical grade) (62).
      BOILING POINT:      158-160 C/3 mmHg (ethyl ester) (62)
      SOLUBILITY:         0.042 g/100 g at 20 C (pure compound) (58);
                          sparingly soluble in water (ethyl ester) (62).
                          III.  HEALTH HAZARD INFORMATION
      OSHA STANDARD:  None established
      NIOSH RECOMMENDED LIMIT:  None established
      ACGIH RECOMMENDED LIMIT:  None established
      TOXICOLOGY
           A.  ACUTE TOXICITY
               DERMAL:  LD50 (rabbit) = >5,000 mg acid/kg, >5,000 mg
                          ethyl/ester/kg; slight to moderate irritation to
                          their skins has been reported on prolonged contact
                          (62).
               ORAL:    LD50 = c. 1,000 - 5,900 mg acid/kg, c. 3580 mg
                          ethyl ester/kg (rat); 670 mg a.e. (as sodium
                          salt)/kg (mouse) (62).
                         IV.  ENVIRONMENTAL CONSIDERATIONS
           LC50 (8-day) for mallard duck and bobwhite quail was >10,000
      mg/kg diet (62).
                       V.  EMERGENCY AND FIRST AID PROCEDURES
           The chemical information provided below has been condensed from
      original source documents, primarily from "Recognition and Management
      of Pesticide Poisonings", 3rd ed. by Donald P.  Morgan, which have been
      footnoted.  This information has been provided in this form for your
      convenience and general guidance only.  In specific cases, further
      consultation and reference may be required and is recommended.  This
      information is not intended as a substitute for a more exhaustive
      review of the literature nor for the judgement of a physician or other
      trained professional.
           If poisoning is suspected, do not wait for symptoms to develop.
      Contact a physician, the nearest hospital, or the nearest Poison
      Control Center.
      SYMPTOMS OF POISONING:  None evident (58).
           FIRST AID AND ANTIDOTES:  Treat symptomatically (58).
           SKIN CONTACT:  If skin affected, wash well with soap and plenty of
      water (56).
           EYE CONTACT:   If eyes affected, wash well with soap and plenty of
      water (56).
      NOTES TO PHYSICIAN:
           Antidote:  Activated charcoal or egg white solutions (gastric
      lavage) (56).
                        VI.  FIRE AND EXPLOSION INFORMATION
           Nonflammable (58).
                                VII.  COMPATIBILITY
           No known incompatibilities.  Noncorrosive (58).
                             VIII.  PROTECTIVE MEASURES
      STORAGE AND HANDLING:  Do not get on skin or in eyes.  Always store in
      a cool, dry, dark place.  Do not spray in strong sunlight; preferably
      spray on late afternoon, evening, or at dusk (56).
      PROTECTIVE CLOTHING:  Wear gloves (56).
                        IX.  PROCEDURES FOR SPILLS AND LEAKS
                      IN CASE OF EMERGENCY, CALL, DAY OR NIGHT
                                   (800) 424-9300
                       PESTICIDE TEAM SAFETY NETWORK/CHEMTREC
                               X.  LITERATURE CITED
      56.  Farm Chemicals Handbook, 70th ed.  1984.  R. T. Meister, G. L.
               Berg, C. Sine, S. Meister, and J. Poplyk, eds.  Meister
               Publishing Co., Willoughby, OH.
      58.  Weed Science Society of America, Herbicide Handbook Committee.
               1983.  Herbicide handbook of the weed science society of
               America, 5th ed.  Weed Science Society of America, Champaign,
               IL.  515 pp.
      62.  The Pesticide Manual:  A World Compendium, 7th ed.  1983.  C.R.
               Worthing, ed.  The British Crop Protection Council, Croydon,
               England.  695 pp.
      3/20/85